This great PowerGUI Script Editor add-on by Gyorgy Nemesmagasi gives you the ability to browse PowerShell help topics right in the Script Editor (you can make the help window either float or be docked in the IDE) which makes it super-easy to lookup any PowerShell info when you need it:
The coolest part is that the add-on is loading all the information dynamically – so the cmdlet and alias list will depend on the actual set of snapins and modules you have, and the help information is in your language!
Very helpful and well worth checking out. Download the PowerShell Help Browser add-on here and make your PowerShell scripting experience even better! 🙂
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Dmitry's Blog: Cloud, PowerShell and beyond 
Thanks for you recommendation.
How did you config your system that you trust Gyorgy Nemesmagasi’s Addon?
I installed the PS HelpBrowser. But I not able to run it. Windows knows that the script was transfered to my computer. Now it seems that it does not trust it. How did you config your system to trust the script?
I expected that I would get certified PS HelpBrowser.
The problem is that your web browser marked the downloaded zip file as coming from the internet and so your Windows is blocking its content.
To workaround the issue, please do the following:
1. Right-click the zip file which you downloaded,
2. On the shortcut menu, click Properties,
3. At the bottom of the General tab, click the Unblock button,
4. Then you can extract the content of the zip to WindowsPowerShell\Modules and select it in PowerGUI Script Editor.
Alternatively, you can manually unblock each file in the folder to which you have already extracted the zip.
Hope that helps!
Dmitry